Manual for Induction Motors and Generators
60 -
Maintenance
3BFP 000 050 R0101 REV E
Table 7-1. Maintenance intervals
7.3.1.1 General construction
7.3.1.2 Main supply connection
MAINTENANCE INTERVAL
In equivalent operating hours or time period, which ever comes first
L1
L2
L3
L4
Maintenance
object
4 000 Eq. h
12 000 Eq. h
20 000 Eq. h
28 000 Eq. h
8 000 Eq. h
16 000 Eq. h
24 000 Eq.h
80 000 Eq.h
½ year
Annual
3-5 years
Overhaul
Check / Test
Maintenance object
L1
L2
L3
L4
Check / Test
Machine operation
V / T
V / T
V / T
V / T
Starting, shut down, vibration measurement, no-load point
Mounting and foundation
V
V / T
V / T
V / T / D Cracks, rust, alignment
Exterior
V
V
V
V
Rust, leakage, condition
Fastenings
V
V / T
V / T
V / T
Tightness of all fastenings
Anchor bolts
V
V
V / T
V / T
Fastening, condition
Maintenance object
L1
L2
L3
L4
Check / Test
High voltage cabling
V
V / T
V / T
V / T / D Wear, fastening
High voltage connections
V
V / T
V / T
V / T / D Oxidation, fastening
Terminal box accessories,
i.e. surge capacitors,
arrestors and current
transformers
V
V
V
V
General condition
Cable transits
V
V
V
V
Condition of cables entering the machine and inside the
machine
